Pangaea: means all lands -or that all continents were together Continental Drift: the hypothesis that the continents were together once Fossil: Trace of an ancient organism that has been preserved in rock
Outline
Intro
Africa and South America looks like jigsaw puzzle pieces that fit together
The Theory of Continental Drift
1910 Alfred Wegnar
Hypothesis was that the continents were once joined together that happened 300 years ago
Evidence from landforms
Mountains
Line up South America and Argentina
coal field
European coal field with North America
Evidence for Fossils
found common dinosaur fossil and plant fossil
Evidence for Climate
Current places in the world had the opposite climate
hot places had rock scratches which indicated glaciers were once there
Scientists Rejected Wegner's Theory
Wegnar lacked explanation about why continental drift
Table of Contents
1.3 Drifting Continents
Vocabulary
Pangaea: means all lands -or that all continents were together
Continental Drift: the hypothesis that the continents were together once
Fossil: Trace of an ancient organism that has been preserved in rock
Outline
Intro
The Theory of Continental Drift
Scientists Rejected Wegner's Theory